JPS63309939A - Microreader - Google Patents

Abstract

PURPOSE:To selectively project an original for overlay from various kinds of originals in need and to make it easy to watch an image on a screen by providing a main projecting device and a sub projecting device and projecting the images of different originals on the same screen by means of both projecting devices. CONSTITUTION:A microreader printer provides the main projecting device A, the sub projecting device B and an image forming part C in a main body 1 and the main projecting device A consists of a 1st holding member 2, a 1st light source 3, a guiding member constituted of mirrors M1-M4 and a 1st lens system 4. The sub projecting device B consists of a 2nd holding member 10, a 2nd light source 33 and a 2nd lens system 34 and is mounted on a base 30 provided in the main body 1, then arranged on an opposite side to the screen 5 putting the mirror 4 between them. The image forming part C prints the image of a microfilm radiated by the 1st light source 3 of the main projecting device A. Thus, the overlay image can be selectively projected from various kinds of images and the image projected on the screen 5 is easy to be watched, thereby preventing the occurrence of erroneous assumption, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a microreader that projects an image of a document such as a microfilm on which an information image is recorded onto a screen.

[Prior Art] A conventional microreader includes a holding member that holds a document;
A light source that irradiates the document held by the holding member, a guide member that guides the irradiation light emitted from the light source onto the screen, and a guide member that is arranged on the optical path of the irradiation light guided by the guide member and changes the image of the document. It consists of a lens system that forms an image on a screen at a magnification.

In order to print the image projected on the screen, a frame line of a printing line is provided on the screen as a reference.

[Problems to be Solved by the Invention] In the conventional microreader described above, when the reference frame line provided on the screen is set at f2a for various vapor sizes, misidentification becomes more likely to occur.
There is also a problem that the image on the screen becomes difficult to see.

Furthermore, even if a lens with a predetermined magnification is used when projecting an image on a microfilm using a microreader, if there is an error in the magnification when forming an image on the microfilm, the image will not necessarily be projected at the correct magnification. In this case, it is conceivable to use a zoom lens or the like to adjust the magnification, but in this case a reference scale is required.

In addition, the image projected on the screen has overlapping grids, cursors, crosshairs, etc. (it is convenient to have them projected) when reading items, dimensions, etc.

The present invention was made in view of the above-mentioned circumstances, and its purpose is to project images of print paper borders, cursors, grids, etc., as necessary, along with the microfilm image projected onto the screen. Our goal is to provide a microreader that can.

[Means for Solving the Problems] The microreader of the present invention includes a first holding member that holds a document, a first light source that irradiates the document held by the first holding member, and the first light source. It consists of a guide member that guides the irradiation light emitted from the guide member onto the screen, and a lens system that is arranged on the optical path of the irradiation light guided by the guide member and forms the image of IrtW5 on the screen at a variable or fixed magnification. a main projection device; a second holding member that holds an overlay original; a second light source that irradiates the overlay original held by the second holding member; and an image of the overlay original that is irradiated by the second light source. The apparatus is characterized in that it comprises a sub-projection device comprising a second lens system that forms an image on the screen at a reference magnification.

[Operation] The microreader of the present invention includes a main projection device and a sub-projection device, and images of different documents are projected onto the same screen by both projection devices.

In the main projection device, the original held by the first holding member is irradiated by the first light source, the irradiated light that has passed through the original is guided onto the screen by the guide member, and an image of the original is projected onto the screen. At this time, the uniform image projected onto the screen is enlarged to a predetermined magnification and formed into an image by a lens system placed on the optical path of the irradiated light. On the other hand, in the sub-projection device storage, the overlay document held by the second holding member is irradiated by the second light source, and the image of the overlay document is projected onto the screen on which the 1i image is projected by the main projection device. . At this time, the image projected onto the screen is enlarged to a reference magnification by the second lens system and formed. As a result, the main character We appears on the screen.
It becomes possible to project the projection image by the sub-projection device as needed on the projection image by the device.

[Embodiments] Specific embodiments of the microreader of the present invention will be described below with reference to the drawings.

In this embodiment, the present invention is applied to a microreader printer, and FIG. 1 is an overall perspective view thereof, and FIG. 2 is a side view schematically showing its configuration.

This microsoda printer includes a main projection device A, a W11 projection device B, and an image forming section C within a main body 1.

The main projection device A includes a first holding member 2, a first light source 3, a guide member made of mirrors M1 to M4, and a first lens system 4.

The first holding member 2 holds the microfilm 6 to be projected onto the screen 5, and is disposed at a lower position on the front side of the main body 1.

The first light source 3 is arranged substantially below the first holding member 2 and irradiates the microfilm 6 held by the first holding member 2. This first light source uses a halogen lamp, and is turned on and off by a switch (not shown).

The guide member is composed of four mirrors M1 to M4, and reflects the irradiation light 3a emitted from the first light source 3 to the main body 1.
The screen 5 is placed above the front side of the screen. The mirror M1 is arranged below the first holding member 2, and reflects the irradiated light 3a from the first light source 3 so that the irradiated light 3a is reflected onto the microfilm 6 held by the first holding member 2. The beam is irradiated almost perpendicularly to the The mirror M2 is arranged on the optical path so as to reflect the irradiated light 3a that has passed through the microfilm 6 toward the rear side of the main body 1 at a substantially right angle and guide it to the mirror M3. Mirror M
3 reflects the irradiated light 3a guided from the mirror M2 upward at a substantially right angle and guides it to the mirror M4. When printing, it is swung horizontally to remove it from the optical path of the irradiated light 3a and prevent it from being reflected.In addition, on the extension of the optical path of the irradiated light reflected by the mirror M2, there is a , guides the irradiation light 3a to the image forming section C during printing (mirrors M5 and M6 are arranged.Mirror M4 is
It is arranged on the optical path so that the irradiated light 3a guided by the mirror M3 is reflected at a substantially right angle to the front side of the main body 2 and guided onto the screen 5. This mirror M4 uses a half mirror, and reflects the irradiated light hitting the front side, and the back side (
i! It allows the irradiated light that hits one surface to pass through.

In the first lens system 4, the irradiated light 3a that has passed through the microfilm 6 between the first holding member-2 and the mirror M2 is transmitted to the mirror M2.
It is placed on the optical path that travels to 2. The first lens system 4 magnifies the image on the microfilm 6 formed by irradiation by the first light source 3 to a predetermined magnification, and allows the desired magnification to be set by lens conversion or zooming of a zoom lens. It has become.

The sub-projection device B includes a second holding member 1o, a second light source 33, and a second lens system 34. This sub-projection device B is mounted on a base 30 provided within the main body 1, and is placed on the opposite side of the screen 5 with a mirror M4 in between.

The second holding member 10, as shown in FIG.
1 and an X-moving table 21, and a moving member that moves the Y-moving table 11 and the X-moving table 21, respectively. The y-moving table 11 is a U-shaped member consisting of a y-vertical portion 12, an upper y-horizontal portion 13 and a lower y-horizontal portion 14 extending perpendicularly from both upper and lower ends of the y-vertical portion 12. And X
The moving table 21 includes an X vertical section 22, an upper X horizontal section 23 and a lower X horizontal section 2 extending perpendicularly from both upper and lower ends of the X vertical section 22.
It is a member with a cone-shaped cross section consisting of 4, and is formed to be larger in circumference than the y-movement table 11.

The y-movement table 11 is arranged such that the tenth and lower y-horizontal portions 13.14 are located between the upper and lower X-horizontal portions 23.240 of the X-movement table 21.

The surface of the y-vertical portion 12 opposite to the x-vertical portion 22 has a dip-
A holding plate 15 that holds the bolter 36 is attached via a rivet 15a. An insertion opening 15c is formed on the upper end side of this holding plate 15, and an insertion opening 1a into which a chart holder 36 is inserted is formed on the upper surface 1b of the main body 1 corresponding to this insertion opening 15c (fourth (see figure). A light J window 15b is formed in the center of the holding plate 15 so that the chart film 36a of the held chart holder 36 is irradiated with light. In addition, frontage windows (not shown) are formed in the Y vertical portion 12 and the X vertical portion 22 at positions corresponding to the irradiation windows 15b, respectively.

A female threaded portion 13a is provided at one end of the upper y-horizontal portion 13, and both ends of the female threaded portion 13a are provided through the lower y-horizontal portion 14 and the upper and lower X-horizontal portions 23.24. The feed screw 16 is screwed together. The upper end of the feed screw 16 protrudes from the upper surface 1b of the main body 1 (see FIG. 5), and an operating knob 16a for rotating the feed screw 16 is fixed to the end. On the other hand, guide holes 13b are formed at the other ends of the upper and lower Y-horizontal parts 13.14, and a guide bar 17 whose both ends are fixed to the upper and lower X-horizontal parts 23.24 is inserted into both guide holes 13b. is inserted into.

At both ends of the base 30 in the X-axis direction, 1
A pair of pulleys 25a and 25b are provided, and a wire 26 is stretched between both pulleys 25a and 25b. Is this wire 26 with one end facing downward and horizontal? It is latched to a bin 24a provided on J524, and the other end is latched to a bin 24b via a tensicon spring 26a. Further, one pulley 25a is provided with a rotation shaft 27 that extends upward coaxially with the pulley 25a. The tip of the rotation shaft 27 protrudes from the top surface 1b of the main body 1 (see FIG. 5), and the operation knob 2 for rotating the rotation shaft 27 is provided at the tip.
7a is fixed. Below the X vertical part 22 of the
8 is provided, and is held and guided by the guide portion 29a of the guide rail 29 provided on the base 30, and the guide plate 28
can be slid in the X-axis direction.

Note that in this embodiment, the second holding member 10 is
Although the chart holder 36 is provided so as to be movable in the axial direction, the chart holder 36 may also be rotatably moved in a plane.

The second light source 33 (see FIG. 2) emits light toward the chart film 36a held on the holding plate 15, and is housed in a unit 33a provided on the base 30. The second light source 33 uses a halogen lamp, and is turned on and off by a switch (not shown). The irradiation light emitted from this second light source 33 passes through the mirror M4, which is a half mirror, from its back side,
It is arranged so that the light path emitted from the first light source 3 of the main projection device coincides with the optical path toward the invasive screen 5 reflected by the mirror M4.

The second lens system 34 is arranged on the emission side of the second holding member 10 on the optical path of the irradiation light emitted from the second light 1rt33, and is mounted on the lens holder 34a provided on the base 30 by a belt 34b. Fixed. This second lens system 34 is positioned by setting the distance between the chart film 36a held by the holding plate 15 and the second lens system 34 by positioning parts 34c and 34d formed on the lens holder 34a. .

The image forming section C is for printing an image on the microfilm 36 irradiated by the first light source 3 of the main projection device A. As shown in FIG. 2, this image forming section Ct includes a charging charge 41 that charges the surface of a photoreceptor 40, a photoreceptor 40 on which a latent image is formed upon exposure of an image, and a formed latent image. The image forming apparatus includes a developing device 42 for developing the image, a transfer charger 43 for transferring the developed image onto the paper, and a fixing device 44 for fixing the transferred image on the paper. Photoreceptor 4
0 is disposed substantially below the mirror M6 and is held rotatably in the clockwise direction a in the figure. A charging charger 41, a developing device 42, and a transfer charger 43 are arranged around the photoreceptor 40 in this order along the rotational direction of the photoreceptor 40.

The microreader printer of this embodiment is constructed as described above, and its operation will be explained next.

First, when an image is projected onto the screen 5 by the main We equipment HA, a mirror M3 is placed on the optical path and set to guide the irradiation light to the mirror M4. Then, a desired microfilm 6 is set on the first holding member 2, and the first light source 3 is turned on to irradiate it. When the switch is turned on, the irradiation light emitted from the first light source 3 is reflected by the mirror M1 and then transferred to the microfilm 6 and the first lens system 4.
The light passes through the mirrors M2 to M4, and reaches the screen 5 after being reflected by the mirrors M2 to M4. As a result, the image corresponding to the microfilm 6 is enlarged to a predetermined magnification arbitrarily set by the lens system 4 and projected onto the screen 5.

If you want to read items, dimensions, etc. of the image projected on the screen 5 as described above, sub-projection 1
Images of desired chart films are superimposed and projected using ffiB. In this case, the chart holder 36 is inserted through the insertion opening 1a61 on the surface of the main body 11, and held by the holding plate 15 through the insertion opening 15G. Then, by turning on the switch of the second light +133, the irradiation light irradiated from the second light source 33 is applied to the irradiation window 15b of the holding plate 15, the chart film 35a, and the opening windows of the x and y moving tables 11.21, respectively. The light passes through the second lens system 34 and the mirror M4 and reaches the screen 5, on which the image of the chart film 36a is projected. The image projected at this time is enlarged to a reference magnification by the second lens system 34, and the main projection device! jA
The image is superimposed and projected on the microfilm 6. Then, by operating the operation knobs 16a and 27a, the X and Y moving table 11.21 is moved to perform y&adjustment so that the image on the chart film 36a is at a predetermined position. In this case, when the operating knob 16a is rotated, the feed screw 16 advances and retreats within the female thread 13a, and the y-movement table 11 moves in the y-axis direction while being guided by the guide bar 17.

Also, when the operation knob 27a is rotated, the pulley 25a,
The wire 26 revolves around the wire 25b, and the X-movement table 21 moves in the X-axis direction. An image of a desired chart is superimposed on the image of the microfilm 6 projected onto the screen 5 in this way by a projection device B and is also projected.

And the microfilm 6 projected onto the screen 5
When it is desired to print an image, the chart film 36a corresponding to the desired print paper size is replaced with a frame line of the chart film 36a to be projected onto the screen 5-A. Using this frame line as a reference, the range of the portion of the image on the screen 5 to be printed is set. Then, by swinging the mirror M3 that was on the optical path and removing it from the optical path, the irradiation light reflected by the mirror M2 is reflected by the mirrors M5 and M6 and guided onto the photoreceptor 40 of the image forming section C. Make it. In this state, the photoreceptor 40 rotates, and its surface charged by the charging charge 41 is exposed to light, and a latent image corresponding to the image on the microfilm 6 is formed. This latent image is developed by a developing device 42, and the developed image is transferred onto the supplied paper by a transfer charger 43 and then fixed by a fixing device 44.

As described above, in the microreader printer of this embodiment, in addition to the main projection device WA, there is an independent col-projection device 2FB.
, it is possible to superimpose and project images of a cursor, print paper frame, etc. together with the image on the microfilm 6.

In addition, since it is equipped with a sub-projection device B, it is possible to select any overlay image from among a variety of types and project it as necessary.Therefore, the image projected onto the screen 5 is easy to see and can be easily misidentified. etc. can be prevented from occurring.

Since the second holding member 10 of the sub-projection device aB is provided with a moving member, it can be easily finely adjusted so as to correspond to the projected image of the microfilm 6. Furthermore, the chart film 36a can be easily replaced to the holding plate 15 through the insertion opening 1a outside the main body.

[Effects of the Invention] Since the microreader of the present invention is equipped with the main projection IA row and one projection device, the image of the original projected on the screen by the main projection device and the image of the print paper by the sub projection device are displayed. Images such as frame lines, cursors, grids, etc. can be superimposed and projected. Thereby, it is possible to selectively project overlay documents from among a variety of types as necessary, the image on the screen is easy to see, and misidentifications can be prevented.

Since the image projected by the sub-projection device is of a different system from the image projected by the main projection device, it is not affected by the projection magnification of the main projection device and the magnification does not change unnecessarily. Further, the document projected by the sub-projection device is not limited to a positive document, but a negative document can also be used.

[Brief explanation of the drawing]

Figures 1 to 5 relate to an embodiment of the microreader of the present invention, with Figure 1 being a perspective view showing its external appearance, Figure 2 being a side view schematically showing its internal configuration, and Figure 3 being a sub-projection. perspective view of the device;
FIG. 4 is a plan view of the main body, and FIG. 5 is a side view of a part of the main body. A... Main projection device B... 81 projection device C.
...Image forming section 2...First holding member 3...First light source 4...
Second lens system 5...Screen 6...Microfilm (original) 10...Second holding member 33...Second light source 34.
...Second lens system 36a...Chart film (manuscript for overlay) Patent applicant Agent for Minolta Camera Co., Ltd.
Patent Attorney Hirodo Okawa Patent Attorney Akio Maruyama

Claims (2)

[Claims] (1) a first holding member that holds a document; a first light source that irradiates the document held by the first holding member; and a guide member that guides the irradiation light emitted from the first light source onto a screen; a main projection device comprising a first lens system disposed on the optical path of the irradiation light guided by the guide member and forming an image of the original on a screen with variable or fixed magnification; and a first lens system that holds the overlay original. a second light source that illuminates the overlay document held by the second holding member; and a second light source that forms an image of the overlay document illuminated by the second light source on the screen at a standard magnification. A microreader comprising a sub-projection device consisting of a two-lens system. (2) The microreader according to claim 1, wherein the second holding member comprises a holding stand and a moving member that moves the holding stand in the x-axis and y-axis directions.